Mistral releases the weights for Large 4, its 1-trillion-parameter "Le Chonk"
Mistral previewed the model on October 6 and published improved weights on October 29. Mistral reports it is effectively tied with GLM-5.3 as the leading open-weight coding agent model.
Why it matters: Europe now has an open model at the trillion-parameter tier, though hosting it as a service needs a separate license.
- Parameters
- 1T total
- Active per token
- 52B (a secondary report says 49B; Mistral says 52B)
- Weights size
- 1,061 GB (HF repo)
- Context
- Not stated by Mistral; BenchLM lists 1M
- License
- Mistral Ecosystem Open-Weight (modified MIT). Model-as-a-service needs a commercial license
- API price
- $0.70 / $2.10 per 1M tokens (secondary report)
| Benchmark | Score | Type | Measured or published by |
|---|---|---|---|
| AA Coding Agent Index | 48% | Cited | Mistral, citing Artificial Analysis |
| Terminal-Bench 4.0 | 41% | Cited | Mistral, citing Artificial Analysis |
| FrontierCode 2.0 (private) | 19.7% | Cited | Mistral, citing Cognition |
Mistral's October 6 preview reported 49.8% on the Coding Agent Index and its release page reports 48%. Mistral does not reconcile the two.